Pneumatic wheel for vehicles



A. L. SEABRA PNEUMATIC WHEEL FOR VEHICLES Filed Dec. 22. 1932 July 3, 1934.

Patented July 359 i934" 1.9654358 PMEUMATEC WHEEL Fllt VEHICLES Alberto liebre Seahra9 Sao laulo,1

Application December 22, i932, Serial No. 648,472

En Brazil February 24, i932 i claim. (ci.

l have tiled application in Brazil Feb. 2e, i932 and in Germany on July 18, 1932.

This invention relates to wheels for pneumatic tires and it has for an object the provision ci means for preventing injury to the casing oi a pnerrnatic tire should it collapse or become deflated when in use and the invention provides an emergency support for the vehicle to relieve the pneumatic casing o the weight of the vehicle and injury, due to the operation' o the vehicle while the penurnatic tire is in disuso.

it is an object, furthermore, of this invention to provide a wheel having the usual function of holding a pneumatic tire casing in position :or use and at the saine time supporting tires for the aioresaid emergency purposes, it being understood that the emergency tires will not be subjected to wear or deterioration so long as the pneumatic time is functioning,

it is, furthermore, an object of this invention to provide a wheel oi the character indicated 'which can be constructed almost wholly by the usual metal stamping processes so that the cost of productionis minimized without sacricing anything o the strength and durability oi the construction.

With the foregoing and other objects in view the invention consists in the details of construction and in the arrangement and combination of 'parts to be hereinafter more fully set forth and claimed.

lo. describing the invention in detail, reference will he had to the accompanying drawing iiorrn`1 ing part oi this application, wherein like characters denote corresponding parts in the several views, and in which- `Figure l illustrates a view in elevation or a wheel embodying the invention having the tires applied thereto; and

Figure 2 illustrates a sectional view thereof.

ln the drawing l and 2 denote sections of the 'wheel which are adapted to be secured together by fastenings such as bolts, rivets or the like that 'may extend through the apertures a. The inem-s `bers l and 2 are disk-like at their central portion (or what might be termed the central zone) where they contact and are secured together as stated, and the said central portions each has an aperture b one of which coincides with the other for the reception oi a nave or hub. The members l and 2 are or course they are provided with oppositely disposed anf 'nular channels d and e which orrn a seat c for the beads ordinarily employed on pneumatic tire casings C. lt is obvious from an annular in elevation and inspection of Sill-m39) Figure 2 that when the casing is secured between the members l and 2 in the manner shown and the said members are held assembled by fastenings in the apertures a, the members l and 2 will serve to hold the pneumatic casing in restrained @il condition when the tire is inilated. lThe inner tube j of the pneumatic tire occupies a position in the casing in a weil known manner.

The portions of the members l and 2 beyond the channels diverge reception of the sides of the casing and these di verging portions act to support the said casing and prevent cle-formation thereof.

So long as the pneumatic tire is inflated it will, of curse, assume should it become deiiated or collapsethe space between the diverging portions of the members l; and 2 will act asv aseat into which the tire will be pressed by the load oi the vehicle.

The diverging portions of the members l and 2 terminate in annularly disposed ianges and i and they constitute rims or treads which sup-a port the vehicle when the pneumatic tires are in disuso. In order to provide for the smooth operation of the vehicle, cushion tires o and h are applied to the flanges and these of course may be of any 'appropriate type preferably having efi riciency for absorbing jar and vibration incident to the operation of the wheels over the roadbeds which would otherwise subject them to shocks.

1 claim:

In a pneumatic wheel for vehicles, disk-like members, means for securing the disk-like members together, each of said disk-like members having an annular channel, said channels being opposed to form a seat for the beads of a tire, the said disk-like members terminating in oppositely disposed annular ilanges and the said dish-like members diverging with relation to each other from the channels to the anges to form an annular space, a pneumatic tire positioned in said space with its side walls resting on the diverging portions of said disk-like members and its beads seated in said annular channels, and auxiliary tires on the annular anges, said pneumatic tire, when inflated, projecting radially outwardly beyond said auxiliary tires but adapted, when deated. to collapse in said annular space to form a clearance for the @5 the position illustrated, but 7@ ioo and between said auxiliary tires so that the latter I 

